Hello, so I have a rookie question that I'm sure coil be answered if I were to go through some more threads but not sure where to look for sure. So here goes.
I was brewing my first batch and when opening the white labs yeast I had some shoot out and was waisted. I pitched and within 10 hrs I had bubbles in the airlock and at 18 hrs I had a 5 inch layer of head on top, and I could visible see things going on in the beer. That has all stopped and there is only a thing layer of head on top and my bubbles in the airlock have slowed down significantly to one bubble about every 20sec. Is this a problem and a sign of not enough yeast? Also, I was 1 hundredth over expected og... Not to sure what this means either.